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Jørgen Amdahl
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Proceedings Papers

Numerical Simulation of Concurrent Flexural and Crushing Failure of Level Ice

Mojtaba Mokhtari, Ekaterina Kim, Jørgen Amdahl
Proc. ASME. OMAE2024, Volume 6: Polar and Arctic Sciences and Technology; CFD, FSI, and AI, V006T07A023, June 9–14, 2024
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2024-127608
https://doi.org/10.1115/OMAE2024-127608
View Paper titled, Numerical Simulation of Concurrent Flexural and Crushing Failure of Level Ice
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Topics: Computer simulation, Failure, Fracture (Materials), Ice, Constitutive equations, Damage, Accounting, Compression, Computation, Finite element analysis
Proceedings Papers

Investigations of Axially Compressed Tubular Structures Subjected to Lateral Indentations

Xintong Wang, Zhaolong Yu, Jørgen Amdahl
Proc. ASME. OMAE2024, Volume 2: Structures, Safety, and Reliability, V002T02A094, June 9–14, 2024
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2024-121004
https://doi.org/10.1115/OMAE2024-121004
View Paper titled, Investigations of Axially Compressed Tubular Structures Subjected to Lateral Indentations
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Topics: Absorption, Buckling, Collisions (Physics), Compression, Design, Finite element methods, Ocean engineering, Offshore wind turbines, Ships, Stress
Proceedings Papers

How Loads Interact? A Numerical Investigation of Aluminum Stiffened Panels Under Bi-Axial and Lateral Loads

Xintong Wang, Jørgen Amdahl
Proc. ASME. OMAE2023, Volume 2: Structures, Safety, and Reliability, V002T02A054, June 11–16, 2023
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2023-100743
https://doi.org/10.1115/OMAE2023-100743
View Paper titled, How Loads Interact? A Numerical Investigation of Aluminum Stiffened Panels Under Bi-Axial and Lateral Loads
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Topics: Aluminum, Pressure, Stress, Tensile strength, Welding
Proceedings Papers

Buckling and Post-Buckling Behaviour of Extruded Aluminium Panels Subject to the Combined Effects of Welding and Pitting Corrosion

Mojtaba Mokhtari, Xintong Wang, Jørgen Amdahl
Proc. ASME. OMAE2023, Volume 2: Structures, Safety, and Reliability, V002T02A060, June 11–16, 2023
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2023-105048
https://doi.org/10.1115/OMAE2023-105048
View Paper titled, Buckling and Post-Buckling Behaviour of Extruded Aluminium Panels Subject to the Combined Effects of Welding and Pitting Corrosion
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Topics: Algorithms, Aluminum, Buckling, Corrosion, Tensile strength, Welding
Proceedings Papers

Numerical Simulation of an Aluminium Panel Subject to Ice Impact Load Using a Rate and Pressure Dependent Elastoplastic Material Model for Ice

Mojtaba Mokhtari, Ekaterina Kim, Jørgen Amdahl
Proc. ASME. OMAE2023, Volume 6: Polar and Arctic Sciences and Technology, V006T07A016, June 11–16, 2023
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2023-104771
https://doi.org/10.1115/OMAE2023-104771
View Paper titled, Numerical Simulation of an Aluminium Panel Subject to Ice Impact Load Using a Rate and Pressure Dependent Elastoplastic Material Model for Ice
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Topics: Aluminum, Computer simulation, Ice, Plasticity, Pressure, Stress
Proceedings Papers

Analysis of Welding Influences on Extruded Aluminum Panel Buckling

Xintong Wang, Jørgen Amdahl
Proc. ASME. OMAE2022, Volume 2: Structures, Safety, and Reliability, V002T02A073, June 5–10, 2022
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2022-78575
https://doi.org/10.1115/OMAE2022-78575
View Paper titled, Analysis of Welding Influences on Extruded Aluminum Panel Buckling
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Topics: Aluminum, Buckling, Stress, Welding
Proceedings Papers

Accuracy of Simplified Methods for Fatigue Damage Estimation of Exposed Fish Farms

Martin Slagstad, Pål Takle Bore, Jørgen Amdahl
Proc. ASME. OMAE2020, Volume 5: Ocean Space Utilization, V005T05A005, August 3–7, 2020
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2020-18720
https://doi.org/10.1115/OMAE2020-18720
View Paper titled, Accuracy of Simplified Methods for Fatigue Damage Estimation of Exposed Fish Farms
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Topics: Fatigue damage, Design, Safety, Waves, Design methodology, Dynamic response, Modeling, Time-domain analysis, Water, Weibull distribution
Journal Articles

Local and Global Responses of a Floating Bridge Under Ship–Girder Collisions

Yanyan Sha, Jørgen Amdahl, Cato Dørum
Journal: Journal of Offshore Mechanics and Arctic Engineering
Publisher: ASME
Article Type: Research-Article
J. Offshore Mech. Arct. Eng. June 2019, 141(3): 031601.
Paper No: OMAE-18-1003
https://doi.org/10.1115/1.4041992
Published Online: January 17, 2019
View Article titled, Local and Global Responses of a Floating Bridge Under Ship–Girder Collisions
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Topics: Bridges (Structures), Collisions (Physics), Girders, Ships
Proceedings Papers

Active Load Mitigation to Counter the Fatigue Damage Contributions From Unavailability in Offshore Wind Turbines

Stian H. Sørum, Emil Smilden, Jørgen Amdahl, Asgeir J. Sørensen
Proc. ASME. OMAE2018, Volume 10: Ocean Renewable Energy, V010T09A061, June 17–22, 2018
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2018-77962
https://doi.org/10.1115/OMAE2018-77962
View Paper titled, Active Load Mitigation to Counter the Fatigue Damage Contributions From Unavailability in Offshore Wind Turbines
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Topics: Fatigue damage, Offshore wind turbines, Stress, Turbines, Design, Fatigue, Ocean engineering, Wind
Proceedings Papers

Numerical Investigation of the Collision Damage and Residual Strength of a Floating Bridge Girder

Yanyan Sha, Jørgen Amdahl, Cato Dørum, Zhaolong Yu
Proc. ASME. OMAE2018, Volume 11A: Honoring Symposium for Professor Carlos Guedes Soares on Marine Technology and Ocean Engineering, V11AT12A009, June 17–22, 2018
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2018-78728
https://doi.org/10.1115/OMAE2018-78728
View Paper titled, Numerical Investigation of the Collision Damage and Residual Strength of a Floating Bridge Girder
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Topics: Bridges (Structures), Collisions (Physics), Damage, Girders, Ships, Clearances (Engineering), Computer simulation, Design, Finite element analysis, Seas
Journal Articles

Evaluation of Nonlinear Material Behavior for Offshore Structures Subjected to Accidental Actions

Martin Storheim, Hagbart S. Alsos, Jørgen Amdahl
Journal: Journal of Offshore Mechanics and Arctic Engineering
Publisher: ASME
Article Type: Research-Article
J. Offshore Mech. Arct. Eng. August 2018, 140(4): 041401.
Paper No: OMAE-17-1044
https://doi.org/10.1115/1.4038585
Published Online: January 9, 2018
View Article titled, Evaluation of Nonlinear Material Behavior for Offshore Structures Subjected to Accidental Actions
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Topics: Fracture (Materials), Fracture (Process), Safety, Hardening, Simulation, Stress
Proceedings Papers

Assessment to Iceberg Impact Loads to Fixed Structures in Multi-Planar Space

Zhenhui Liu, Song Ming, Jørgen Amdahl
Proc. ASME. OMAE2017, Volume 8: Polar and Arctic Sciences and Technology; Petroleum Technology, V008T07A019, June 25–30, 2017
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2017-61012
https://doi.org/10.1115/OMAE2017-61012
View Paper titled, Assessment to Iceberg Impact Loads to Fixed Structures in Multi-Planar Space
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Topics: Icebergs, Stress, Deformation, Ice, Stiffness, Friction, Momentum, Pressure, Springs
Proceedings Papers

Joint Probability Distribution of Environmental Conditions for Design of Offshore Wind Turbines

Jan-Tore H. Horn, Jørgen R. Krokstad, Jørgen Amdahl
Proc. ASME. OMAE2017, Volume 10: Ocean Renewable Energy, V010T09A068, June 25–30, 2017
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2017-61451
https://doi.org/10.1115/OMAE2017-61451
View Paper titled, Joint Probability Distribution of Environmental Conditions for Design of Offshore Wind Turbines
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Topics: Design, Offshore wind turbines, Statistical distributions, Waves, Wind, Ocean engineering, Seas, Significant wave heights, Wind turbines, Wind velocity
Proceedings Papers

Evaluation of Nonlinear Material Behavior for Offshore Structures Subjected to Accidental Actions

Martin Storheim, Hagbart S. Alsos, Jørgen Amdahl
Proc. ASME. OMAE2017, Volume 3A: Structures, Safety and Reliability, V03AT02A006, June 25–30, 2017
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2017-61861
https://doi.org/10.1115/OMAE2017-61861
View Paper titled, Evaluation of Nonlinear Material Behavior for Offshore Structures Subjected to Accidental Actions
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Topics: Ductile fracture, Hardening, Offshore structures, Safety
Proceedings Papers

Time Domain Simulation of Jack-Up Platform in Second-Order Irregular Seas

Michael Binsar Lubis, Sverre Haver, Jørgen Amdahl
Proc. ASME. OMAE2017, Volume 3A: Structures, Safety and Reliability, V03AT02A022, June 25–30, 2017
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2017-61463
https://doi.org/10.1115/OMAE2017-61463
View Paper titled, Time Domain Simulation of Jack-Up Platform in Second-Order Irregular Seas
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Topics: Jack-up drilling rigs, Seas, Simulation, Waves, Particulate matter, Stress, Kinematics, Drag (Fluid dynamics), Dynamic analysis, Elevations (Drawings)
Proceedings Papers

Ship Collision Analysis of a Floating Bridge in Ferry-Free E39 Project

Yanyan Sha, Jørgen Amdahl
Proc. ASME. OMAE2017, Volume 9: Offshore Geotechnics; Torgeir Moan Honoring Symposium, V009T12A021, June 25–30, 2017
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2017-62720
https://doi.org/10.1115/OMAE2017-62720
View Paper titled, Ship Collision Analysis of a Floating Bridge in Ferry-Free E39 Project
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Topics: Bridges (Structures), Collisions (Physics), Ships, Stress, Tunnels, Damage, Deformation, Design, Displacement, Finite element model
Proceedings Papers

Determination of Environmental Conditions Relevant for the Ultimate Limit State at an Exposed Aquaculture Location

Pål Takle Bore, Jørgen Amdahl
Proc. ASME. OMAE2017, Volume 3B: Structures, Safety and Reliability, V03BT02A043, June 25–30, 2017
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2017-61413
https://doi.org/10.1115/OMAE2017-61413
View Paper titled, Determination of Environmental Conditions Relevant for the Ultimate Limit State at an Exposed Aquaculture Location
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Topics: Design, Probability, Seas, Waves, Wind, Wind waves
Proceedings Papers

Numerical Investigation of Fluid-Ice-Structure Interaction During Collision by an Arbitrary Lagrangian Eulerian Method

Ming Song, Ekaterina Kim, Jørgen Amdahl, Marilena Greco, Mhamed Souli
Proc. ASME. OMAE2016, Volume 8: Polar and Arctic Sciences and Technology; Petroleum Technology, V008T07A017, June 19–24, 2016
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2016-54608
https://doi.org/10.1115/OMAE2016-54608
View Paper titled, Numerical Investigation of Fluid-Ice-Structure Interaction During Collision by an Arbitrary Lagrangian Eulerian Method
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Topics: Collisions (Physics), Fluids, Ice, Fluid structure interaction, Structural design, Water, Algorithms, Civil engineering, Computers, Equations of state
Proceedings Papers

An Extension of the BWH Instability Criterion: Numerical Study

Martin Storheim, Hagbart Alsos, Odd Sture Hopperstad, Jørgen Amdahl
Proc. ASME. OMAE2015, Volume 3: Structures, Safety and Reliability, V003T02A002, May 31–June 5, 2015
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2015-41178
https://doi.org/10.1115/OMAE2015-41178
View Paper titled, An Extension of the BWH Instability Criterion: Numerical Study
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Topics: Calibration, Collisions (Physics), Computer simulation, Damage, Design, Errors, Forming limit diagrams, Fracture (Materials), Fracture (Process), Necking
Proceedings Papers

On the Effect of Work Hardening on Strain-Localization and Fracture Initiation in Collision Simulations

Martin Storheim, Jørgen Amdahl
Proc. ASME. OMAE2015, Volume 3: Structures, Safety and Reliability, V003T02A003, May 31–June 5, 2015
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2015-41180
https://doi.org/10.1115/OMAE2015-41180
View Paper titled, On the Effect of Work Hardening on Strain-Localization and Fracture Initiation in Collision Simulations
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Topics: Collisions (Physics), Engineering simulation, Fracture (Materials), Fracture (Process), Simulation, Work hardening, Ships, Stress, Yield stress, Elongation